Ten Causes Why I Don't Like Golang

After I first began programming in Go, my abstract of it
was, “The great issues are nice and the dangerous issues are bizarre and
I can stay with them.” After one other three years and some massive
initiatives in Go, I now not just like the language and wouldn’t
use it for a brand new venture. Listed here are 10 the reason why, in no
specific order.

  1. Go makes use of capitalization to find out identifier visibility. People who begin
    with a decrease case letter are package-private, and those who begin with a
    capital are package-public. The aim presumably is to chop down on the
    public and personal key phrases, however capitalization was already used to
    imply different issues: Courses are capitalized and constants are solely in
    higher case. It’s a recurring supply of discomfort to me to call international
    constants solely in decrease case.

    Issues worsen if you wish to have a non-public struct, since
    it should be in decrease case. For instance you may need a consumer struct.
    What do you title the variable? Usually I’d name it consumer, however not
    solely does that look complicated, however may cause parse errors when the
    compiler confuses them:

    sort consumer struct 
        title string
    func predominant() 
        var consumer *consumer
        consumer = &consumer    // Compile error

    Idiomatic Go makes use of shorter names like u, however I finished utilizing one-letter
    variables 35 years in the past after I left TRS-80 Fundamental behind.

    There are sensible issues, too. Incessantly I begin out with a
    personal discipline or struct title and later determine to make it public, forcing me
    to repair all utilization of the identifier. And even if you wish to preserve your
    fields personal, you’re compelled to make them public if you wish to use the
    json bundle. In reality I had a struct with 74 personal fields that I wished
    to serialize with json and was compelled to make all fields public and
    replace all makes use of all through the big app.

    Capitalization additionally restricts visiblity to 2 ranges (bundle and
    utterly public). I steadily need file-private identifiers for
    capabilities and constants, however there isn’t even a pleasant method for Go to
    introduce such a factor now.

  2. Structs don’t explicitly declare which interfaces they implement. That is
    carried out implicitly by matching the tactic signatures. This design makes a
    basic error: It assumes that if two strategies have the identical
    signature, then they’ve the identical contract. In Java when a category
    implements an interface, it’s doing greater than telling the compiler that its
    technique signatures will match. It’s additionally making a promise that the
    contracts of the strategies had been carried out. If the tactic returns a
    boolean, the feedback within the interface will specify what the worth means.
    (E.g., true on success, false on failure.)

    A Go struct may implement the
    identical technique signature however reverse the which means of the return worth. It’s
    free to do this – it by no means promised something. The Java class can do that
    too, in fact, however then it’s clearly a bug within the class. In Go
    the bug was launched by whoever solid the article to the interface with out
    first verifying the contractual compatibility of each technique. This burden
    shouldn’t fall on each API consumer. It needs to be carried out as soon as by the implementor
    of the struct and declared within the code.

  3. Go doesn’t have exceptions. It makes use of a number of return values to return
    errors. It’s far too simple to neglect to examine errors:

    db.Exec("DELTE FROM merchandise WHERE id = 2")

    The DELETE is misspelled, and there will likely be nothing to let you know
    that one thing went flawed. If that is half of a giant transaction,
    the entire transaction will silently do nothing. Good luck
    determining why. Error return values are nice however the programmer
    needs to be compelled to examine them (or assign the error to _).

    Moreover, the idiom of returning both a worth or an error:

    consumer, err := getUserById(userId)

    invitations bugs as a result of there’s nothing to implement the truth that precisely one
    of consumer and err comprise legitimate values. With exceptions the consumer
    variable is rarely assigned-to (so studying from it would generate a warning),
    and with algebraic sum varieties (unions) the compiler will make sure that solely the
    right one may be accessed.

  4. There’s far an excessive amount of magical conduct. For instance, if I
    title my supply file i_love_linux.go, it gained’t get compiled on my Mac.
    If I unintentionally title a operate init() it’ll get run mechanically.
    That is all a part of the “conference over configuration” motion. It’s
    nice for small initiatives however bites you on massive ones, and Go was
    meant to handle the issue of “programming within the massive”.

  5. Partly due to the capitalization drawback, it’s simple to finish up with
    a number of identically-named identifiers. It’s truly fairly simple to
    have a bundle, struct, and variable all known as merchandise. In Java the
    bundle can be fully-qualified and the category can be capitalized.
    Typically I discover it exhausting to learn Go as a result of I can’t all the time inform at
    a look what scope an identifier belongs to.

  6. It’s tough to generate Go code mechanically. The compiler is strict
    about warnings, which means that unused imports and variables trigger the construct
    to fail. However when producing a big file it is probably not initially clear
    which packages want importing. Moreover you might have two packages whose
    names conflict, and it’s not simple to resolve this mechanically since you
    can’t even know the imported image for those who solely know the bundle title. (The
    bundle imported as github.com/lkesteloot/foo is permitted to
    truly be bundle bar, and a few open supply libraries do that.)
    Even for those who might determine that out, the producing
    program can be compelled to alias the imports to keep away from the battle.
    In Java all these issues are solved by importing nothing
    and all the time fully-qualifying all class references, one thing not permitted
    in Go.

  7. There’s no ternary (?:) operator. Each C-like language has had this, and
    I miss it day by day that I program in Go. The language is eradicating
    purposeful idioms proper when everyone seems to be agreeing that these are helpful.
    As an alternative of the purposeful and stylish:

    var serializeType = showArchived ? mannequin.SerializeAll : mannequin.SerializeNonArchivedOnly

    you’re compelled to this crucial verbosity:

    var serializeType mannequin.SerializeType
    if showArchived 
        serializeType = mannequin.SerializeAll
        serializeType = mannequin.SerializeNonArchivedOnly

    I see no good argument for omitting this operator.

  8. The type.Interface method is clumsy. When you’ve got 10 completely different structs
    that you simply wish to type (in arrays), you must write 30 capabilities, and 20
    of these are trivially related (size and swap). Additionally, they’re
    exhausting to compose: You’ll be able to perhaps delegate to a different Much less(), however you
    should belief that its Len() and Swap() are appropriate. And eventually
    it simply appears to be like bizarre, as a result of the solid appears to be like like a operate name:


    The tried and true method of offering a examine technique works nice and
    has none of those drawbacks.

  9. Import versioning and vendoring is horrible. That is well-covered floor
    elsewhere, however frankly it’s 2016 and it’s not acceptable to launch a brand new
    language with no answer for this. And never solely does Go not have an answer,
    however its import system is actively hostile to vendoring.

  10. No generics. Additionally effectively coated elsewhere, however once more I can’t actually use a
    language that doesn’t let me implement a generic Stack class. The
    answer usually given is to open-code the stack utilizing slice capabilities
    like append(), however once more it’s 2016 and I wish to write push() and
    pop(), not:

    stack = append(stack, object)


    object = stack[len(stack) - 1]
    stack = stack[:len(stack) - 1]

    I used to be shocked what number of third-party libraries use interface
    all through. This can be a signal of a poorly-designed sort system.

  11. Okay a bonus cause! That is very minor, however factors to a failure on
    the a part of the designers to grasp how programmers work. The
    append() operate extends an array, returning the brand new array:

    customers = append(customers, newUser)

    The issue is that the next code will practically all the time work:

    append(customers, newUser)

    The append() operate modifies the array in-place when it will probably, and
    solely returns a distinct array if it has no place left. You couldn’t
    ask for worse API design. What number of bugs are attributable to forgetting to
    assign the consequence? So much, as a result of preliminary testing could not set off a resize.
    Both the assemble ought to work in a different way (modifying the primary argument
    in place) or ought to pressure the programmer to make use of the return worth.

    Replace: They later modified the compiler to generate an error if the
    append() operate’s consequence just isn’t assigned to something.

Right here’s a abstract of my suggestions for Go utilization: In case your program is
small and may principally be described by what it does, and if it doesn’t work together
a lot with knowledge outdoors itself (databases, the net), then Go is ok. If it’s
massive, if it has non-trivial knowledge constructions (even one thing easy like a
tree), or if it is going to be coping with loads of knowledge from the skin, then the
sort system will combat you for no profit and also you’re higher off utilizing a
completely different static language (the place the sort system helps) or a dynamic language
(the place it doesn’t get in your method).

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Sep 13, Grand Remembrances

Today is Grandparents Day in the United States. Being a Grand is a special honor. I feel very blessed that my wife and I have two grandchildren. We were able to visit them today. Yes, we are still being cautious with the coronavirus, but we also find it very difficult to not see them when they live so close. So today we did drop by to visit Jacob (age 10) and Sophia (age 7) along with their parents. We brought donuts and caught up with them. Our grandchildren are still pretty young and this is a precious time in their lives – and ours!

I wish I had known my grandparents better. We never lived in the same place. Dad was a career Air Force pilot, so we moved around a lot. But we did get to see them once in a while when they would visit us, or we them.

A Plague of Giants

There are five known magical ‘kennings’ or types: air, water, fire, earth, and plants. Each nation specializes in of these kennings, and the magic influences the society. There’s a big pitfall with this diversity of ability and locale–not everyone gets along.

Enter the Hathrim giants, or ‘lavaborn’ whose kenning is fire. Where they live the trees that fuel their fire are long gone, but the giants are definitely not welcome anywhere else. They’re big, they’re violent, and they’re ruthless. When a volcano erupts and they are forced to evacuate, they take the opportunity to relocate. They don’t care that it’s in a place where they aren’t wanted.

I first read Kevin Hearne’s Iron Druid books and loved them (also the quirky The Tales of Pell), so was curious about this new venture, starting with A PLAGUE OF GIANTS. Think Avatar: The Last Airbender meets Jim Butcher’s Codex Alera series. Elemental magic, a variety of races, different lands. And it’s all thrown at you from page one.

But this story is told a little differently. It starts at the end of the war, after a difficult victory, and a bard with earth kenning uses his magic to re-tell the story of the war to a city of refugees. And it’s this movement back and forth in time and between key players in this war that we get a singularly grand view of the war as a whole. Hearne uses this method to great effect.

There are so many interesting characters in this book that I can’t cover them all here. Often in books like this such a large cast of ‘main’ character can make the storytelling suffer, especially since they don’t have a lot of interaction with each other for the first 3/4 of the book–but it doesn’t suffer, thankfully. And the characterization is good enough, despite these short bursts, that by the end we understand these people and care about what happens to them.

If there were a main character it would be Dervan, a historian who is assigned to record (also spy on?) the bard’s stories. He finds himself caught up in machinations he feels unfit to survive. Fintan is the bard from another country, who at first is rather mysterious and his true personality is hidden by the stories he tells; it takes a while to understand him. Gorin Mogen is the leader of the Hathrim giants who decide to find a new land to settle. He’s hard to like, but as far as villains go, you understand his motivations and he can be even a little convincing. There’s Abhi, the son of hunters, who decides hunting isn’t the life for him–and unexpectedly finds himself on a quest for the sixth kenning. And Gondel Vedd, a scholar of linguistics who finds himself tasked with finding a way to communicate with a race of giants never seen before (definitely not Hathrim) and stumbles onto a mystery no one could have guessed: there may be a seventh kenning.

There are other characters, but what makes them all interesting is that they’re regular people (well, maybe not Gorin Mogen or the viceroy–he’s a piece of work) who become heroes in their own little ways, whether it’s the teenage girl who isn’t afraid to share vital information, to the scholars who suddenly find how crucial their minds are to the survival of a nation, to the humble public servants who find bravery when they need it most. This is a story of loss, love, redemption, courage, unity, and overcoming despair to not give up. All very human experiences by simple people who do extraordinary things.

Hearne’s worldbuilding is engaging. He doesn’t bottle feed you, at first it feels like drinking from a hydrant, but then you settle in and pick up things along the way. Then he shows you stuff with a punch to the gut. This is no fluffy world with simple magic without price. All the magic has a price, and more often than not it leads you straight to death’s door. For most people just the seeking of the magic will kill you. I particularly enjoyed the scenes with Ahbi and his discovery of the sixth kenning and everything associated with it. But giants? I mean, really? It isn’t bad enough fighting people who can control fire that you have to add that they’re twice the size of normal people? For Hearne if it’s war, the stakes are pretty high, and it gets ugly.

The benefit of the storytelling style is that the book, despite its length, moves along steadily (Hearne is no novice, here). The bits of story lead you along without annoying cliffhangers (mostly), and I never got bored with the switch between characters. It was easy to move between them, and they were recognizable enough that I got lost or confused. The end of the novel felt a little abrupt, but I guess that has more to do with I was ready for the story to continue, despite the exiting climax.

If you’re looking for epic fantasy with fun storytelling and clever worldbuilding, check out A PLAGUE OF GIANTS.

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The Artwork Of Gary Choo

Gary Choo is a concept artist/illustrator based in Singapore. I’ve know Gary for a good many years ( 17, actually ), working together in animation studios in Singapore like Silicon Illusions and Lucasfilm. Gary currently runs an art team at Mighty Bear Games, but when time allows he also draws covers for Marvel comics, and they’re amazing –

The Art Of Gary Choo
The Art Of Gary Choo
The Art Of Gary Choo
The Art Of Gary Choo
The Art Of Gary Choo

To see more of Gary’s work or to engage him for freelance work, head down to his ArtStation.

The post The Art Of Gary Choo appeared first on Halcyon Realms – Art Book Reviews – Anime, Manga, Film, Photography.